"Indeed, those who disbelieve in the verses of Allah"—meaning: in the religion of Allah—"so give them tidings of a painful punishment"—that is, agonizing. [Verse 23]
﴿إِنَّ الَّذِينَ يَكْفُرُونَ بِآيَاتِ اللَّهِ﴾ يَعْنِي: بدين اللَّه ﴿فَبَشِّرْهُمْ بِعَذَابٍ أَلِيم﴾ موجع. [آيَة ٢٣]